Magnetic field flowing across an air gap?
Single pole operation (bar, block, disc and ring magnet) When a depth of field is required for attracting, switching or actuating across an air gap, use a single piece of magnet.
S
N
Single pole operation magnet flux crosses a gap but has a diminishing strength field.
Pot Magnets
Button Magnet
Both north and south pole are on one face of the magnet, similar to button and horseshoe magnets.
North Pole
The magnetic material is encased inside a steel pot. The pot is part of the magnetic circuit. The poles are concentric.
South Pole
The depth of the magnetic field is shallower than that of magnets with poles further apart, e,g. horseshoe magnets, but grip in intimate contact is generally superior. Maximum operating temperature of pots is lower than the magnet material used because of the different thermal expansion rates of the material and the pot. Exposure to temperatures higher than the recommended maximum can cause units to come apart. • No stray flux as magnetism is retained in a closed circuit • Pot screens magnet material from demagnetising effects • Pot is machinable • Can be inserted into steel without adverse effects (not the case with unscreened magnets) Other Features
Horsehoe Magnet
North Pole
South Pole
Clamping, Holding or Lifting
• Two pole operation (Horseshoe, button or pot magnet) • Two pole or multi-pole magnets are designed for holding, clamping or lifting when in direct contact with a ferro-magnetic surface.
Please note, this guide provides general information only. For specific information on bespoke products or applications please contact us on +44 (0)114 225 0600
Two pole operation magnet flux does not travel as far but is stronger
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Eclipse Magnetics Work Smart with Magnets
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